Machine for sawing beveled curves



UNITED STATES PATENT OFFICE.

JOHN C. HINTZ, OF CINCINNATI, OHIO.

MACHINE FOR SAWING BEVELED CURVES.

Specification of Letters Patent No. 18,745, dated December 1, 1857.

To all whom it may concern:

The above described rests with their supl porting carriages I stylecollectively the log by means of the rest J which supporting Be it knownthat I, JOHN C. HINTZ, of traversing and turning rests F, F. Cincinnati,Hamilton county, Ohio, have in- In place of the tackling G g H H S Svented a new and useful Machine for Saw- T T', Ol Operating the l'eStS EF, E F, 60 ing Curved and 1Winding Forms; and I other familiar forms oftransmitting motion hereby declare the following to be a full, may beemployed, such for example as a clear, and exact description thereof,refer- COmbnatiOn of screw and bevel gearing. ence being had to theaccompanying draw- The wind or bevel is produced in the ings, makingpart of this specification. timber as fOllOWSI 65 f My invention has forits object the sawing J is a vibrating frame or rest connected of curvedand winding forms in large pieces t0 the bench A, by a horizontal hingey', in of timber such as are required in ship builda line or nearly sowith the plane of the ing; and consists in a peculiar system of saw. Thefree edge of this rest is subject shifting rests in connection with ascroll t0 elevation and depression by means of a 70 saw and a feedroller by means of which the Winch Z attached t-o a nut L, whichcommuoperator is enabled, while the saw is in acnicates through a screwthreaded rod K with tion to impart any desired deflecting, rollan armdepending from the rest J. Jouring or winding motion to the stuff. naledin the top of the rest J, at right angles In the accompanying drawingsFigure 1 is to its hinge, are friction rollers M M. 75 2o a front viewof the machine. Fig. 2 is a VThe operation is as follows: A log or sideview (the cranes being hidden) Fig. 3 slab, marked with the desiredlines of kerf is a plan. is placed in position, with its rear end on A,is a bench, mounted with a feed roller the rest E F, and its front endon the feed B and traversed by alarge scroll or jig roller B and thefriction rollers M of the 80 saw C, actuated by power in the usual restJ, which is then so adjusted as to bring manner. The feed roller B, haslongitudithe commencement of the kerf lines exactly nally, therepresented spherical form, to opposite the cutting edge of the saw.Then, adapt it to forward the log,` in whatever the pedal I, beingdepressed, the bearing or canted position it may be placed. direction ofthe log is so adjusted by the 85 The work is placed completely under thewinch g, as to bring the kerf lines tangential control of the operator,while standing at his with the blade of the saw. The machine post nearthe saw, by the following means. being then set in motion the rotationof the D, D, are two cranes, supporting each of feed roller B, forwardsthe stuff to the acthem a carriage E, E, each carriage being tion of thesaw while the Sawyer, having the 90 surmounted with a turning rest F, F,armed Winches g, and l, at his command, so de.-

at top with points or burrs. On these rests fleets and rolls the log soas to obtain the de- (F, F,) the ends of the log or slab are supsiredcut. As the log advances, the crane D, ported as hereafter explained.turning easily on its centers, accommodates The carriages E, E, are madeto traverse itself to the motion. Then the log, by its 95 4o the cranesby the following means. A shaft progressive motion, approachesequilibrium 'I Gr, is surmounted with a winch g, convenient on the feedroller, a slight weight or presto the hand of the operator, and at itslower sure is applied, to hold down its rear end, end carries twopulleys H, H', one or other until the center of gravity has passed theof which, as they are elevated or depressed roller. The motion of thesaw and feed 100 on the shaft by the pedal I or I engages roller arethen suspended and the pedal I with a feather on the shaft G, and isthereby being depressed the forward rest E F-thus compelled to revolvewith the latter. The connected with the winch g,- is brought unrotationof the pulley H moves the carriage der the front end of the log, whichis E, by means of the chain S, which being allowed to rest upon it, themotions of the 105 stretched around pulleys T, has its ends fassaw andfeed roller being then resumed, the tened respectively to the front andback of log is governed through its connection with the carriage. Therotation of the pulley H the forward rest, the winch g, being einin likemanner moves the carriage E, by ployed as before. i' means of the chainS, stretched around pul- Throughout the operation any desired 110 leysT. bevel (varied at pleasure) is imparted to the as it does the chiefweight of the log is enabled to control the bevel sufficiently forgeneral purposes but if it be preferred the rolling of the log may befacilitated by constructing the rests E FE F so as to admit of a limitedrocking motion.

A customary clutch operated by a lever may be substituted for thedescribed pedal movement; or the rests may be worked by means ofindependent winch shafts.

The swing of the cranes may be placed under the control of the Sawyer bymeans of endless cords or otherwise.

I claim as new and of my invention herein- 4 1. The cranes D, D, withthe traversing and turning'rests E F, E, F, communicating by meanssubstantially as described with a winch g or its equivalent, convenientto the hand of the Sawyer; in the described combination with a scrollsaw and feed roller for the purposes set forth.

2. I claim in this connection, the rest J j, constructed and operatedsubstantially as and for the purposes set forth.

In testimony of which invention I hereunto set my hand.

Y JOHN C. HIN'IYZ.

Attest:

GEO. H. KNIGHT, JAS. H. GRIDLEY.

